Simplified inlet channels

G - Physics – 01 – N

Patent

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Details

G01N 21/07 (2006.01) B04B 5/04 (2006.01) G01N 35/00 (2006.01)

Patent

CA 2170528

The present invention provides centrifu- gal rotor (52) for delivering a liquid, typically a biological sample such as diluted plasma, to an unvented chamber in the rotor (52) through an unmodified inlet channel (60). The unvented chamber is typically a cuvette (62) compris- ing reagents necessary for analysis of a bio- logical sample. The unmodified inlet channels (60) are sized such that, as the rotor (52) spins, gas escapes from the chamber through the in- let channel (60) as the liquid enters the cham- ber through the inlet channel (60). The pri- mary feature which allows the air to escape from the unvented chamber (62) is that the cross-sectional area of the inlet is greater than the cross-sectional area of the liquid flowing through it.

La présente invention concerne un rotor centrifuge (52) destiné à introduire un liquide, typiquement un échantillon biologique tel que du plasma dilué, dans une chambre sans évent se trouvant dans le rotor (52), par un canal d'entrée (60) non modifié. La chambre sans évent est typiquement une cuvette (62) comprenant les réactifs nécessaires à l'analyse d'un échantillon biologique. Les canaux d'entrée (60) non modifiés sont dimensionnés pour que, à mesure que le rotor (52) tourne, le gaz s'échappe de la chambre par un canal d'entrée (60) à mesure que le liquide entre dans la chambre par l'intermédiaire dudit canal d'entrée (60). La caractéristique de base qui permet à l'air de s'échapper de la chambre (62) sans évent est que la superficie de la section d'entrée est supérieure à celle du liquide qui y coule.

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